merge revisions 61753:61750 61747:61740 61737:61728

Revert all the VM generator rewrites; requested by naruse


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61755 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

tool/ruby_vm/helpers/dumper.rb

@@ -1,108 +0,0 @@
-#! /your/favourite/path/to/ruby
-# -*- mode: ruby; coding: utf-8; indent-tabs-mode: nil; ruby-indent-level: 2 -*-
-# -*- frozen_string_literal: true; -*-
-# -*- warn_indent: true; -*-
-#
-# Copyright (c) 2017 Urabe, Shyouhei.  All rights reserved.
-#
-# This file is  a part of the programming language  Ruby.  Permission is hereby
-# granted, to  either redistribute and/or  modify this file, provided  that the
-# conditions  mentioned in  the file  COPYING are  met.  Consult  the file  for
-# details.
-
-require 'pathname'
-require 'erb'
-require_relative 'c_escape'
-
-class RubyVM::Dumper
-  include RubyVM::CEscape
-
-  # I learned this handy "super-private" maneuver from @a_matsuda
-  # cf: https://github.com/rails/rails/pull/27363/files
-  using Module.new {
-    refine RubyVM::Dumper do
-      private
-
-      def new_binding
-        # This `eval 'binding'` does not return the current binding
-        # but creates one on top of it.
-        return eval 'binding'
-      end
-
-      def new_erb spec
-        path  = Pathname.new __dir__
-        path += '../views'
-        path += spec
-        src   = path.read mode: 'rt:utf-8:utf-8'
-      rescue Errno::ENOENT
-        raise "don't know how to generate #{path}"
-      else
-        erb = ERB.new src, nil, '%-'
-        erb.filename = path.realpath.to_path
-        return erb
-      end
-
-      def finderb spec
-        return @erb.fetch spec do |k|
-          erb = new_erb k
-          @erb[k] = erb
-        end
-      end
-
-      def replace_pragma_line str, lineno
-        if str == "#pragma RubyVM reset source\n" then
-          return "#line #{lineno + 2} #{@file}\n"
-        else
-          return str
-        end
-      end
-
-      public
-
-      def do_render source, locals
-        erb = finderb source
-        bnd = @empty.dup
-        locals.each_pair do |k, v|
-          bnd.local_variable_set k, v
-        end
-        return erb.result bnd
-      end
-
-      def replace_pragma str
-        return str                                 \
-          . each_line                              \
-          . with_index                             \
-          . map {|i, j| replace_pragma_line i, j } \
-          . join
-      end
-    end
-  }
-
-  def initialize path
-    @erb   = {}
-    @empty = new_binding
-    dst    = Pathname.new Dir.getwd
-    dst   += path
-    @file  = cstr dst.realdirpath.to_path
-  end
-
-  def render partial, locals: {}
-    return do_render "_#{partial}.erb", locals
-  end
-
-  def generate template
-    str = do_render "#{template}.erb", {}
-    return replace_pragma str
-  end
-
-  private
-
-  # view helpers
-
-  alias cstr rstring2cstr
-  alias comm commentify
-
-  def render_c_expr expr
-    render 'c_expr', locals: { expr: expr, }
-  end
-end